Some titration of open-minded misinformed comments is probably vital to the functioning of the site; without them, a lot of interesting true stuff is buried as shared subtext among the specialists here, and sails over the heads of everyone else.

This is a problem I've seen in specialist forums elsewhere; the conversation runs out, because nobody's poking the community with wrong stuff, and correcting a wrong statement is intensely more motivating than just making a plain factual statement for its own benefit (also: when you do that, the rest of the community will go "uh, yeah, and?").